Commonly occurring product ions for PG(18:2(9Z,12Z)/22:4(7Z,10Z,13Z,16Z))) (View full structure)
| m/z | Ion Description | Structure (click to enlarge) |
|---|---|---|
| 821.5338 | Precursor ion [M-H]- |  |
| 747.4970 | Loss of glycerol from precursor ion |  |
| 559.3042 | Loss of sn1 acyl chain as ketene (RCH=C=O) from [M-H]- |  |
| 541.2936 | Neutral loss of sn1 RCOOH group from [M-H]- |  |
| 507.2729 | Loss of sn2 acyl chain as ketene (RCH=C=O) from [M-H]- |  |
| 489.2623 | Neutral loss of sn2 RCOOH group from [M-H]- |  |
| 485.2674 | Loss of sn1 acyl chain as ketene (RCH=C=O) and glycerol from [M-H]- |  |
| 467.2568 | Neutral loss of sn1 RCOOH group and glycerol from [M-H]- |  |
| 433.2361 | Loss of sn2 acyl chain as ketene (RCH=C=O) and glycerol from [M-H]- |  |
| 415.2255 | Neutral loss of sn2 RCOOH group and glycerol from [M-H]- |  |
| 331.2643 | sn2 RCOO- ion |  |
| 287.2744 | Loss of CO2 from sn2 RCOO- ion (PUFA) |  |
| 279.2330 | sn1 RCOO- ion |  |
| 245.0432 | Glycerophosphoglycerol ion |  |
| 227.0326 | Glycerophosphoglycerol ion -H2O |  |
| 209.0221 | Glycerophosphoglycerol ion -2H2O |  |
| 152.9958 | Glycerol-3-phosphate ion with loss of H2O |  |
| 96.9696 | H2PO4- ion (from phosphate) |  |
| 78.9591 | PO3- ion (from phosphate) |  |